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A051543 Quotients of consecutive values of lcm of first n triangular numbers (A000217).

%I A051543 #8 Jul 02 2025 16:01:58
%S A051543 3,2,5,1,7,2,3,1,11,1,13,1,1,2,17,1,19,1,1,1,23,1,5,1,3,1,29,1,31,2,1,
%T A051543 1,1,1,37,1,1,1,41,1,43,1,1,1,47,1,7,1,1,1,53,1,1,1,1,1,59,1,61,1,1,2,
%U A051543 1,1,67,1,1,1,71,1,73,1,1,1,1,1,79,1,3,1,83,1,1,1,1,1,89,1,1,1,1,1,1,1
%N A051543 Quotients of consecutive values of lcm of first n triangular numbers (A000217).
%H A051543 Reinhard Zumkeller, <a href="/A051543/b051543.txt">Table of n, a(n) for n = 1..10000</a>
%F A051543 a(n) = A025555(n+1)/A025555(n)
%e A051543 a(5) = A025555(6)/A025555(5) = 210/30 = 7
%o A051543 (Haskell)
%o A051543 a051543 n = a051542_list !! (n-1)
%o A051543 a051543_list = zipWith div (tail a025555_list) a025555_list
%o A051543 -- _Reinhard Zumkeller_, Mar 12 2014
%Y A051543 Cf. A025555.
%Y A051543 Cf. A051542.
%K A051543 easy,nonn
%O A051543 1,1
%A A051543 _Asher Auel_
%E A051543 Corrected and extended by _James Sellers_